<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <link rel="stylesheet" href="./node_modules/toastr/build/toastr.css">
  <style>
    .toast-center{
      left: 50%;
      transform: translateX(-50%);
    }
  </style>
  
</head>
<body>
  <button>点击抽奖</button>
  <button id="change-bg">点击切换背景颜色</button>
  <button id="request">点击发送请求</button>

  <script src="./js/bundle.js"></script>
</body>
</html>